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Which of the following BEST ensures that complete encryption and authentication protocols exist for protecting

A TCP/IP-based environment is exposed to the Internet. Which of the following BEST ensures that
complete encryption and authentication protocols exist for protecting information while
transmitted?

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A.
Work is completed in tunnel mode with IP security using the nested services of authentication
header (AH) and encapsulating security payload (ESP).

B.
A digital signature with RSA has been implemented.

C.
Digital certificates with RSA are being used.

D.
Work is being completed in TCP services.

Explanation:

Tunnel mode with IP security provides encryption and authentication of the complete IP package.
To accomplish this, the AH and ESP services can be nested. Choices B and C provide
authentication and integrity. TCP services do not provide encryption and authentication.


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